he's now a professor of political science and public policy at duke university. we thank you both for being with us. peter feaver, to you first. we heard governor romney today criticize the president broadly for not rejecting strongly enough america's influence in the world. yet when it came to specifics, we didn't hear many details. so let me just ask you about a couple of different places in the world. what about when it comes to iran. wh exactly governor romney be doing differently right now? >> well, this is the criticism that the obama campaign has leveled at the romney campaign for not being detailed and specific enough. when it comes to iran, the president hasn't laid out a red line that he said clearly he would enforce. when asked to be precise about what it means for iran not to possess a nuclear weapon, the articulation of the red line, he's been vague and says he doesn't want to parse it further. i think there's a certain element of ambiguity about where you would draw the line precisely so as to avoid being trapped by it. but the other point to make i